Transmission-band spring compressor



March 10, 1925. 1,529,247

R. JFGOETZ TRANSMISSION BAND SPRING COMPRESSOR Filed June 21. 1923 INVEPatented Mar. 10, 1925.

* iU NiI-T E -Df .fs'ftAT -esmeant foiseiceor'ToLEno', OHIO.

Y 'T ANSMIs'sION-BAND sear-ms COMPRESSOR.

App'lication fil'ed June 21,

To all whom it may concern:

Be it known thatyI, ROLAND J. Gon'rz, a

citizen of the United 'States, and a resident of Toledo, in thecounty ofLucas and State of Ohio, have invented a new and "useful case may bereadily placed in position and secured while the springs are heldcompressed.

The invention may be contained in structures in which their detailsdiffer from each other. To illustrate a practical application of theinvention I have selected a structure containing the invention asdescribed hereinafter. The structure selected is illustrated in theaccompanying drawings.

Fig. 1 of the drawings is a side View of the transmission bands of aFord machine and the structure containing the invention. Fig. 2illustrates an end view of the device and the edge view of one of thebands. Fig. 3 is a top view of the device. Fig. 4: is a sectional viewtaken on the line 4l-4 indicated in Fig. 3. Fig. 5 is a side view of thedevice and Fig. 6 is a sectional view taken on the line 6-6 indicated inFig. 3.

In Figs. 1 and 2, the bands 10 are provided with the usual brackets 11,through which extend the bolts or shafts 12. The shafts 12 are providedwith suitable cams that are operated by cams connected to the pedals ofthe Ford automobile which co --act to draw the bolts or shafts 12 so asto move the ends of the bands towards each other in a manner well knownin the art. On each of the bolts or shafts 12 there is located a spring13, positioned between the brackets 11. The springs 13 are expansionsprings and are of a length} sufiicient to yieldingly oounter-act themovement to draw the brackets towards each other. Thus the springs 11tend to separate the brackets 11 on each band and to cause the bands toopen and thus release their frictional engage; ment with the disks orwheel on which they operate.

In order to relieve the brackets and the shafts 12 from the tension ofthe springs 13,

1923. seriai uo. 646,975;

I have provided arn'eans -for 'comp'ressing the springs. Itconsists of=apair ofepivotally connected sheet metal parts bent in'the formof aboxandprovidedwiththe sides or clamping members "14, the. ends'partsf15 andthe top portions 16. The parts of the T box are: I'pivotally connected"together by means of the threaded rod 17 that extends I throughopenings fdrmed- -in the parts 15.

The top portions 16 are made in the form of cams,-'that is to say theyare provided with the relatively'sloping edges 18 and 19. A nut 20 islocated on the threaded rod and is provided with a lug 21 that extendsupward from therod 17 and between the relatively sloping edges 18 and19. The spring 22 surrounds the rod 17 and its ends engage the two partsof the box shaped device. It is so bent as to cause the relativelysloping edges 18 and 19 to move toward each other except as they areheld in their relative positions by the lug 21. The spring" 22 operatesto press the edges of the parts of the box against the lug 21. The rod17is provided with a head 23 that may be in the form of a handle or athumb nut'that' r is secured to the rod for the purpose of convenientlyrotatingthe rod, As the rod 23 is rotated the nut 20 and its lug. 21 ismoved along the rod, with the result that the edges 18 are separated bythe lug or' allowed to approach each other by the spring 22 which keepsthe edges against. the lug, according to the direction that the nut 20is moved along the rod.

.The clamping members '14 of the'box are provided with recesses 24 thatare so positioned relatively to each other that the box may be placed onthe bolts or shafts 12 and so that the bolts or shafts 12'will belocatedin the recesses 24. The box may be opened 7 up so that the sidesmay be placed at the ends of the springs and thebox pushed down over therods or bolts 12. The clamping members may be closed toward each otherby the rotation of the rod 17 and thus press the end of the springtoward each In a device of the character described, a pair of clampingmembers, a rod for pivot ally connecting the members together, means 1ing members to move towards eachother.

' Q. In a device of the character described} a pair of clamping members;a threaded member extendingparallel'to the clamping faces of clampingmembers, awedge means operated by the threaded member for caus ing theclamping members to move towards each other. I v 3 3.- In a device oftheicharacter described, a pair of pivoted clamping members, a threadedmember extending parallel to the clamping faces 01 the clamping members,the clamping members having opposing edges inclined oneto the other anda block for'causing the clamping faces to move to-- wards each other. pp v In a device of the character described;

a pair of clamping members pivotally'connected together and having edgessloping towards each other, a member for operating on the saidedges forpivotally moving the said clamping members towards each other.

5. In a spring compressor for Ford 'autoni'obile bands, a be); shapeddevice formed of vtvvo parts, eaclr parthaving recesses for receivingthe draw rods of the bands near the ends of the springslocated'on therods, a threaded rod for pivotally connecting the said parts, the saidparts having Wedge shaped surfaces, a'imember located on the rod forseparating the said surfaces to cause the said parts to compress thesaid springs. In testimony whereof, I" have hereunto signed my name tothis specification.

"-"ROLAND'J..GOETZ.

